Abstract: A conveyor system, adapted to move a cylindrical belt carrying therein a material, particularly a granular or powdered material, the cylindrical belt being suspended by hangers from wire ropes, further comprising driving means adapted to drive a set of pulleys and wheels, and belt disengageable means for disengaging the cylindrical belt from said hangers at loading and unloading stations in the path of travel thereof. The belt and the rope are driven in synchronously interlocking relation so that both the belt and the rope are equally loaded, thereby avoiding displacement in position between them during operation.